.nav_main {
  position: fixed;
}

.item {
  width: 164rpx;
  text-align: center;
  padding: 30rpx 0;
  font-size: 26rpx;
  color: #000000;
  font-weight: 400;
  position: relative;
}

.item_act {
  background-color: #fff;
  font-size: 26rpx;
  font-weight: 700;

  &::before {
    content: '';
    display: inline-block;
    width: 12rpx;
    height: 34rpx;
    background: #fc4e3e;
    border-radius: 0rpx 30rpx 30rpx 0rpx;
    position: absolute;
    left: 0;
  }
}
